hi tiric, a couple of things.... first off, do you have two active virus scans running? avast and McAfee? [i'm not talking about an online scan service]. One is enough. Two is more than enough, it is bad - they interfere. Choose one, ditch the other.
Hijackthis. Download [or unzip if u still have the zip file] a fresh copy to a new folder next to your program files eg C:\HT\.... and run it again from there. But in an attempt to clean things up, at first do a Scan Only, and set to fix:-

Then fix them. And then run again with Scan and Save log file.
Next get CCleaner from http://www.ccleaner.com/ - and put it in a new folder. You should aim to keep this one for general use. I set it from the install checkboxes to only open from the recycle bin. It's neater that way. Now run Ccleaner from the recycle bin rclick menu using its default settings [if you set up CCleaner as i suggested, rclicking the bin icon should give you the run Ccleaner option...].
Next try an online scan at panda:- http://www.pandasoftware.com/products/activescan?
-the link to the scan is just above the padlock pic.... free online virus scan.. enter a valid? email and follow through to the scan, and scan your system.
Post the log it produces here, along with that fresh hijackthis log.
Cheers.

One thing first, Tiric, i have just been prompted by another poster [PhilliePhan..] that HT can miss files for Avast when it checks for NT Services, so do not include those two Avast O23 lines for fixing until you decide what you are doing with your AV scanners...